[Click play above to stream Deep Space Destructors’ Psychedelogy in full. Album is out Feb. 27 on Space Rock Productions.]

Goes without saying that time is a construct and that humans’ ability to understand it only relates to our very small, very remote position in a much vaster universe and that even the figures the construct presents are utterly beyond our conception — i.e., we cannot fathom 200 of our own years, and our years are meaningless to the surrounding cosmos. That’s a given. However, three years between full-lengths still feels like a long time for Finnish (nations: also a construct) trio Deep Space Destructors. Their fourth full-length, Psychedelogy, arrives via Space Rock Productions, which is the imprint helmed by synth wizard Scott “Dr. Space” Heller of Øresund Space Collective and known for releasing that band’s work as well as other projects and offshoots.

To my knowledge, Deep Space Destructors — bassist/vocalist Jani Pitkänen, guitarist/backing vocalist Petri Lassila and drummer Markus Pitkänen — have no relation to that collective (yet), so all the more it’s an endorsement that should ring in the ears among the cosmically converted. The Oulu natives earn it well in the four tracks of Psychedelogy, which follows the 2015 two-songer Spring Break from Space (review here) as well as their first three long-players, 2014’s III (review here), 2013’s II (review here) and 2012’s I (review here), and stay true to the Hawkwindian roots of the genre while exploring progressive textures of their own. At an easily-digested 38 minutes, Psychedelogy presents its two sides — side Space and side Void (the last EP did likewise) — with poise and without pretense. They’re going on this trip one way or the other. Whether or not you come along is going to be your call.

Each half of Psychedelogy pairs a shorter piece with a longer one. Opener “Journey to the Space Mountain” (7:55) will be familiar to anyone who caught wind of Spring Break from Space, since it launched that brief offering as well. It is particularly suited to the task here too, with a fervent thrust that kicks up interstellar dust almost immediately following a quick sample and enacts immersive swirl as it makes its way toward its fist-in-the-air-moment-of-galaxial-righteousness title-line hook. Both it and the 10-minute “Spacemind,” which follows, have an underlying sense of triumph, but the momentum that carries through them isn’t to be understated, Markus and Jani making for a rhythmic powerhouse beneath Petri‘s echoing solo as “Journey to the Space Mountain” pours through its midsection, eventually making its way, gloriously, back to the chorus as part of a build the apex of which strikes just before feedback caps off.

A quieter, more Floydian beginning sets the course for “Spacemind,” but there’s a tension in the bass and drums as well as the first verse takes hold, Jani‘s vocals coated in effects, keys adding to the melody of Petri‘s guitar. Before the two-minute mark, “Spacemind” hits into its chorus with even more of a feeling of arrival than “Journey to the Space Mountain,” but it’s still just the beginning, as Deep Space Destructors use that as the launchpad for an instrumental bridge of classic prog fits and turns before moving back into the soothing verse section like nothing ever happened. They’re not yet at the halfway point of the track, but the fluidity of what they’ve executed already makes “Spacemind” a particular highlight of Psychedelogy. The ensuing jam, calm but purposeful with periodic vocal overlay, seals that, and when the three-piece ignite thrusters and push toward the song’s conclusion, the payoff seems to last until the very final second, clearly making the most of its time — which, just as a reminder, is a construct and doesn’t exist. Brain goes pop.

I don’t know if there’s an intentional difference between side Space and side Void in terms of what Deep Space Destructors are looking to accomplish, but it’s easy enough to read the second half of Psychedelogy as pushing further out along the progressive path the band has thus far marched. Both “Return to the Black Star” (7:05) and closer “From the Ashes” (12:34) keep the flow molten, the overarching vibe spontaneous but subject to some command, and come fleshed out by effects and synth, creating the parameters of the alternate universe in which they dwell. With Jani and Petri together on vocals, “Return to the Black Star” echoes some of the Hawkwindiness of “Journey to the Space Mountain,” but is more patient in that exercise and more willing to bring an improvised-seeming lead to the foreground in its back end. Again, this doesn’t necessarily mark a radical departure from the album’s beginnings, but the continuation presents some subtle turns for those ready to take Psychedelogy on for multiple listens — a process through which it only grows more fulfilling.

Something else “Return to the Black Star” and “From the Ashes” have in common is being less immediately about their hooks, but the core guitar/bass figure in the finale is especially memorable nonetheless for its proggy intricacy — one can’t help but be reminded of peak-era Steven Wilson in some of the ensuing shimmer — and the additional flourish of sitar is yet another distinguishing factor. Ultimately though it’s the core guitar/bass/drums dynamic between the Pitkänens and Lassila that carries “From the Ashes” over so effectively, and beneath the swirl, the kosmiche thematics and the range, that turns out to be what most draws these songs together with the rest of Deep Space Destructors‘ body of work. Their time on “spring break” was not misspent, and whether they’ll resume the album-per-year pace of their first three outings, I wouldn’t speculate, but they’ve come into Psychedelogy with a clear sense of who they are and what they want to be as a group. If they follow through going forward on their own terms, then all the better, whatever those terms might be.